The art teacher encouraged students to do quick sketches of their surroundings to improve their observation skills.
艺术老师鼓励学生画周围环境的速写，以提高他们的观察能力。
During the brainstorming session, participants used quick sketches to visually represent their ideas.
在头脑风暴会议期间，参与者使用速写来形象地表达他们的想法。